Charles p



CHARLES F. HAWLEY.

I Irn'provementl in Angular Strap-Hinges.

No. 115,851. Patentedmnemnsn.

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ing' a support to the vertex Unrrnn y Sfrnrns CHARLES Il". HAWLEY, OF KANSAS CITY., MISSOURI.

YIMPROVEMENT IN ANGULAR SS'FRllB-l-llNGES.`

Specification forming part of Letters Patent No, 115,851, dated J une 13, i871.

To all whom 'it may con-eem:

Be it known that I, CHARLES F; I-IAWLEY, of Kansas City, in the county oi'Jackson and State of Missouri, have invented n. new und useful VImprovement in Angular Strap-Hinges, 85e.;

und I do hereby declare that the following is a full, clear, and exact description tl1ereot',\vhich will enable others skilled in the art to nia-ke und use the suine, reference being had to the accompanying drawing forming,` part of this specification.

My invention relates to a new Way of lapplyoi' an angular hinge-strap, where the sharp turn is apt to strain the iibers oi' the metal and allow it to be rendilyfruetnred. The improvement consists in striking up the metal inwardly where the angle is to he formed.

In the accompanying drawing, Figure 1 represents a. perspective View of a. hinge, designed for n Window-shutter, constructed according-to my invention.

Similar letters of reference indicate corresponding parts.

A represents the angle, and B the bruce or corrugution in the angle. The improvement simply consists in forcing inward aportion of the outward corner or projecting angle A so as to form u brace or truss on the inner angie.

There may he two or more corrugntions, if desired; but for ordinary strnp hin ges or breekL ets one is usually found sufiicient to give the bend or :ingle the required degree of strength.

rlhis improvement applies exclusively to wrought-iron hin ges.

As such wronghtiron Work is now constructed (angular hin ges in particular) the angle vhas to be strengthened by additional thickness and Weight oil iron, involving u good deal of labor in drawing the iron und properly proportion nenne @erren- 

